Author: Johan Havegheer
Date: 15:16:45 01/23/99
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On January 23, 1999 at 10:52:02, Robert Hyatt wrote: >On January 23, 1999 at 10:12:36, Djordje Vidanovic wrote: > >>On January 23, 1999 at 00:07:11, Bruce Moreland wrote: >> >>>Isn't Bionic Impakt Crafty? Does anybody know what changes have been made to >>>the program in order to distinguish it from the original Crafty? >>> >>>bruce >> >>I have been asked by Frank Quisinsky to translate his statement regarding Bionic >>Impakt. Here it is: >> >>"Persönlich habe ich mich beim Dutch Open 98 (Bionic Impakt wurde dritter) >>sehr lange mit Hans Secelle (Programmerer) unterhalten welcher mir >>versicherte, das Bionic kein Crafty ist. Bionic Impakt beruht zwar auf dem >>Source Code von Crafty (Version 9.26 und 15.20), jedoch wurde das Programm vor >>einem Jahr völlig neu überarbeitet. Ferner hat Hans seine eigenen entwickelten >>Ideen implementiert. Unter anderem sind die Bewertungsfunktionen, wie z. B. >>Figurenfelder, Angriffsheuristiken, Bewertung an der Wurzel als auch das >>Eröffnungsbuch und dessen Zeitkontrollen von Bionic übernommen wurden. >>Persönlich schätzt Hans die taktischen Fähigkeiten gegenüber Crafty etwas >>schlechter und die positionellen etwas stärker ein. Als Beweis dient hier >>z.B. der LCT II Test welcher, völlig unterschiedliche Ergebnisse im Vergleich >>zu Crafty aufzeigt. Ich habe das überprüft und Bionic hat wirklich nichts >>mit Crafty gemeinsam." >> >>I spent lots of time with Hans Secelle during the Dutch Open 98 (Bionic placed >>third) trying to make sure that Bionic is not Crafty. Bionic is based on >>Crafty's source code (versions 9.26 and 15.20) but the program was completely >>rewritten, which took a year. Furthermore, Hans implemented his own, original >>ideas. Among others, the new evaluation functions such as piece squares, attack >>heuristics, root-evals, as well as the opening book and time controls that were >>taken over from Bionic [I presume the previous version of Bionic that had been >>around for quite some time, say since 1991, Dj.V.]. Hans estimates that the >>tactical abilities of Bionic are not on a par with Crafty, while its positional >>play is somewhat better. The LCTII test can be used as evidence for this, as it >>gives completely different scores when compared with Crafty. I have checked >>this out and Crafty and Bionic have really nothing in common. >> >>Regards, >>Djordje > > >This is wrong. The version of bionic that playedin the first 1/2 of the >Dutch tournament matched crafty _exactly_. Every move of every game except >for 1 or 2. > >But that isn't nearly so important as one key thing they 'get'... that being >a parallel search that no one else has. Which gives them a 2x-3x speed boost >over everyone else. So to say 'it isn't crafty' is baloney. A few eval changes >don't make a new program. I've also pointed out that anybody that takes the >crafty source is _required_ to make that source public as part of the freeware >project. They've never done this. IE I'd like to see a source version >released that will _exactly_ match the Dutch tourney moves. _then_ we could >_know_ what is different. They were going to do this, supposedly. But nothing >has been done. There !!! never !!! has been a change in the program version during the dutch championship. Hans gived me a copy of Bionic on the last day and i did some tests to prove that Bionic IS CERTAINLY different from Crafty. I took the first 15 positions off the CCC III tests. (downloaded from the rebel site). Here are the results : AMD-K6-2-300 64Mb SDRAM 3min/move Bionic Impakt Crafty 15.20 Testnr Move Score Depth Move Score Depth 1 Bd3 0,57 11 Re1 0,31 11 2 Nd4 0,21 11 Re3 -0,06 11 3 Qc2 -0,07 10 Qc2 -0,25 10 4 Bh6 0,07 11 Bh6 0,22 12 5 dxe6 -0,54 11 Kh1 -0,66 11 6 h5 -1,78 11 h5 -1,56 11 7 …Kh7 0,56 10 …Kh7 0,53 10 8 …b5 -0,54 11 …b5 -0,24 10 9 …Qe7 0,95 11 …Qe7 0,57 12 10 …Ne5 -0,32 10 …Re8 0,07 10 11 d5 0,64 10 Bg5 0,48 9 12 e6 0,56 12 e6 0,51 11 13 Ng3 -1,62 9 Ne7+ -1,51 10 14 Nxf5! -0,58 11 Rxe8+ -1,81 10 15 Ne5 0,54 11 b3 0,28 11 Bionic plays another move than Crafty in 8 testes on 15 !!!! Sorry for my rather weak English. Johan Havegheer (Bionic test team)
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